PayloadBay.com - Drogue Parachute

Drogue Parachute

In a dual deployment setup, a drogue parachute is deployed at apogee to allow a rocket to fall at a fast rate until the main parachute opens at a pre-determined altitude.

References:

Adding Dual Deployment (Article)
NEFAR's October 2007 Launch (Article)
NEFAR's February 2008 Launch (Article)
Broken Arrow Build (Article)
NEFAR's April 2008 Launch (Article)
NEFAR's July 2008 Launch (Article)
Tikva: A New Hope (Article)
TTRA's January, 2009, Launch (Article)
Dual Deployment (Miscellaneous)
miniAlt/WD (Miscellaneous)
Shear Pins (Parts Finder)